U.S. patent application number 17/213865 was filed with the patent office on 2021-10-14 for walking toy.
The applicant listed for this patent is NINTENDO CO., LTD.. Invention is credited to Takaki FUJINO, Hironori FURUIKE, Toshiaki IWAO, Yasuhisa KITANO, Kazuhiko KORIYAMA, Keizo OTA.
Application Number | 20210316226 17/213865 |
Document ID | / |
Family ID | 1000005526414 |
Filed Date | 2021-10-14 |
United States Patent
Application |
20210316226 |
Kind Code |
A1 |
FURUIKE; Hironori ; et
al. |
October 14, 2021 |
WALKING TOY
Abstract
A walking toy in which if a torso is moved forward walking
motion is performed has the torso, two legs. The walking toy
includes a crank member having a pair of crank eccentric shafts.
Each of the legs has a motion member giving rotational force to the
crank member when the torso moves forward. Each of the motion
members has an eccentric shaft connecting part pivotably connected
to the corresponding crank eccentric shaft, a torso cooperation
part, and an action part on which force received from the walking
surface act. Projections are formed at the torso cooperation part,
while grooves are formed at the torso. If the action part of the
one leg moves rearward, the motion member moves to thereby impart
rotational force to the crank member and, the other leg is moved
forward due to rotation of the crank member, and then contacts the
walking surface.
Inventors: |
FURUIKE; Hironori; (Kyoto,
JP) ; IWAO; Toshiaki; (Kyoto, JP) ; KORIYAMA;
Kazuhiko; (Kyoto, JP) ; KITANO; Yasuhisa;
(Kyoto, JP) ; FUJINO; Takaki; (Kyoto, JP) ;
OTA; Keizo; (Kyoto, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
NINTENDO CO., LTD. |
Kyoto |
|
JP |
|
|
Family ID: |
1000005526414 |
Appl. No.: |
17/213865 |
Filed: |
March 26, 2021 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A63H 31/08 20130101;
A63H 11/18 20130101 |
International
Class: |
A63H 11/18 20060101
A63H011/18; A63H 31/08 20060101 A63H031/08 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 9, 2020 |
JP |
2020-070506 |
Claims
1. A walking toy having: an upper body part including a torso; and
two legs connected to the torso, in which if the torso is made to
move forward in the state where a contact surface of at least one
leg contacts a walking surface, walking motion is performed by the
legs, the walking toy comprising: a crank member rotatably
supported in the torso and having a pair of crank eccentric shafts
positioned eccentrically from a rotational axis of the crank
member, wherein the crank eccentric shafts are arranged so as to
have opposite phases from each other with respect to the rotational
axis, each of the legs has a motion member giving rotational force
to the crank member when the torso moves forward, each of the
motion members has an eccentric shaft connecting part pivotably
connected to the corresponding crank eccentric shaft, a torso
cooperation part cooperating with the torso, and an action part on
which force received from the walking surface act, grooves are
formed at one of the torso cooperation parts of the motion members
and the torso, and projections sliding in the grooves and guided by
the grooves are formed at the other of the torso cooperation parts
and the torso, the grooves are configured so that the projections
can reciprocate in the grooves corresponding to rotational motion
of the crank member, and if the torso is made to move forward to
make the action part of the motion member of the one leg contacting
the walking surface move rearward relative to the torso, the motion
member of the one leg moves to thereby impart rotational force to
the crank member by the motion member due to the projection being
limited in movement in the groove and, the other leg is made to
move forward in the state separated from the walking surface due to
rotation of the crank member and then is made to contact the
walking surface.
2. A walking toy having: an upper body part including a torso: and
two legs connected to the torso, in which if the torso is made to
move forward in the state where a contact surface of at least one
leg contacts a walking surface, walking motion is performed by the
legs, the walking toy comprising: a crank member rotatably
supported in the torso and having a pair of crank eccentric shafts
positioned eccentrically from a rotational axis of the crank
member, wherein the crank eccentric shafts are arranged so as to
have opposite phases from each other with respect to the rotational
axis, each of the legs has a motion member giving rotational force
to the crank member when the torso moves forward, each of the
motion members has an eccentric shaft connecting parts pivotably
connected to the corresponding crank eccentric shafts, a torso
cooperation parts cooperating with the torso, and an action part on
which force received from the walking surface act, support point
mechanisms making the torso cooperation parts of the motion members
function as points of support in the motion members are formed at
the torso cooperation parts of the motion members and the torso,
and if the torso is made to move forward to make the action part of
the motion member of the one leg contacting the walking surface
move rearward relative to the torso, the motion member of the one
leg is pivoted using the upper part of that motion member as a
point of support, and a rotational force is applied to the crank
member by the motion member of the pivoting one leg and, the other
leg is made to move forward in the state separated from the walking
surface due to rotation of the crank member and then is made to
contact the walking surface.
3. The walking toy according to claim 2, wherein the support point
mechanisms include guide mechanisms guiding the torso cooperation
parts of the motion members with respect to the torso.
4. A walking toy having: an upper body part including a torso: and
two legs connected to the torso, in which if the torso is made to
move forward in the state where a contact surface of at least one
leg contacts a walking surface, walking motion is performed by the
legs, the walking toy comprising: a crank member rotatably
supported in the torso and having a pair of crank eccentric shafts
positioned eccentrically from a rotational axis of the crank
member, wherein the crank eccentric shafts are arranged so as to
have opposite phases from each other with respect to the rotational
axis, each of the legs has a motion member giving rotational force
to the crank member when the torso moves forward, each of the
motion members has an eccentric shaft connecting part pivotably
connected to the corresponding crank eccentric shafts, a torso
cooperation parts cooperating with the torso, and an action part on
which force received from the walking surface act, movement
limiting mechanisms limiting the range by which the torso
cooperation parts of the motion members can move with respect to
the torso are formed at the torso cooperation parts of the motion
members and the torso, and if the torso is made to move forward to
make the action part of the motion member of the one leg contacting
the walking surface move rearward relative to the torso, the motion
member of the one leg moves to apply rotational force to the crank
member by the motion member due to the range of possible movement
of the torso cooperation part being limited by the movement
limiting mechanism, and, the other leg is made to move forward in a
state separated from the walking surface due to rotation of the
crank member and then contacts the walking surface.
5. The walking toy according to claim 4, wherein the movement
limiting mechanisms include guide mechanisms guiding the torso
cooperation parts with respect to the torso.
6. The walking toy according to claim 3, wherein the guide
mechanisms guide the torso cooperation parts with respect to the
torso in a direction where the torso forms an angle with respect to
the walking surface when the torso is in a state standing upright
with respect to the walking surface.
7. The walking toy according to claim 5, wherein the guide
mechanisms guide the torso cooperation parts with respect to the
torso in a direction where the torso forms an angle with respect to
the walking surface when the torso is in a state standing upright
with respect to the walking surface.
8. The walking toy according to claim 3 wherein the guide
mechanisms have grooves provided at one of the torso cooperation
parts and the torso, and projections provided at the other of the
torso cooperation parts and the torso, and the projections slide in
the grooves whereby the torso cooperation parts are guided with
respect to the torso.
9. The walking toy according to claim 5 wherein the guide
mechanisms have grooves provided at one of the torso cooperation
parts and the torso, and projections provided at the other of the
torso cooperation parts and the torso, and the projections slide in
the grooves whereby the torso cooperation parts are guided with
respect to the torso.
10. The walking toy according to claim 1, wherein each of the legs
further has an upper leg member and a lower leg member, the upper
part of the upper leg member is pivotably connected to the torso
and the lower leg member is pivotably connected to a lower part of
the upper leg member, and the action part of each of the motion
members is connected to the corresponding lower leg member at a
position different from the connecting part to the upper leg
members.
11. The walking toy according to claim 10, wherein the action part
of each of the motion members is pivotably connected to the
corresponding lower leg member at a positions rearward from the
connecting part to the upper leg members.
12. The walking toy according to claim 1, wherein the motion
members are straight rods, and the eccentric shaft connecting part
is positioned between the torso cooperation part and the action
part.
13. The walking toy according to claim 1, wherein the contact
surface of each of the legs is formed in an arc shape sticking out
toward the walking surface in the front-rear direction.
14. The walking toy according to claim 1, wherein the walking toy
further comprises a walking aid attached to the upper body part,
and the walking aid has an auxiliary contact part continuously
contacting the walking surface at a position different from the
legs while the walking motion is being performed.
15. The walking toy according to claim 14, wherein the auxiliary
contact parts are wheels.
16. The walking toy according to claim 14, wherein the torso, the
legs, and the crank member are configured so that the walking
motion is continuously performed when the angle, in the front-rear
direction, of the axis of the torso with respect to the walking
surface is within a certain range, and the walking aid holds the
torso so that the angle of the axis of the torso with respect to
the walking surface is maintained within the certain range.
17. The walking toy according to claim 14, wherein the torso, the
legs, and the crank member are configured so that the lower leg
member of the other leg which had been moved forward in a state
separated from the walking surface contacts the ground after
reaching the forward most position, if the angle, in the front-rear
direction, of the axis of the torso with respect to the walking
surface is within a certain range, and the walking aid holds the
torso so that the angle of the axis of the torso with respect to
the walking surface is maintained within the certain range.
18. The walking toy according to claim 14, wherein the walking aid
has an attachment part and the upper body part has a receiving
part, and the walking aid is detachably attached with respect to
the upper body part by the attachment part being detachably
attached with respect to the receiving part.
19. The walking toy according to claim 18, further comprising a
phase detector detecting a rotational phase of the crank member,
wherein the phase detector has a detected part provided at the
crank member and a detector arranged at the attachment part so as
to face the detected part, the detected part is formed so that an
outer circumferential surface thereof changes in distance from the
rotational axis of the crank member in the circumferential
direction of the crank member, and the detector outputs a signal
corresponding to the distance to the outer circumferential surface
of the detected part.
20. The walking toy according to claim 19, wherein the detector is
an optical sensor detecting a distance to an object, the receiving
part is a receiving hole formed in the torso, the attachment part
is configured so as to be inserted in the receiving hole, and the
detector is arranged at the attachment part so that the detector
faces the detected part in the torso when the attachment part is
inserted into the receiving part.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] The present application claims priority to Japanese Patent
Application No. 2020-070506 filed on Apr. 9, 2020, which is
incorporated herein by reference in its entirety including the
specifications, drawings and abstract.
FIELD
[0002] The present disclosure relates to a walking toy.
BACKGROUND
[0003] A walking toy having a torso and two legs connected to the
torso and walking by the legs when making the torso move forward in
the state with the bottom end surface of at least one leg
contacting the ground, floor, or other walking surface, has been
studied (for example, WO2017/212899). In such a walking toy, when
making the torso move forward to move the one leg contacting the
walking surface relatively rearward, a crank member rotates and,
due to the rotation of the crank member, the other leg is moved
forward in the state separated from the walking surface. By such an
operation being continuously performed, the walking toy walks by
its legs.
[0004] In this regard, in one aspect, in one mechanism of the
walking toy described in WO2017/212899, a large number of links are
provided, therefore the structure thereof is complicated and the
number of parts thereof is large. Further, in another aspect, in
another mechanism of the walking toy described in WO2017/212899,
when making one leg move relatively rearward, sometimes the crank
member has difficulty in rotating along with the movement, and
accordingly there is a possibility of stable walking of the walking
toy sometimes being difficult to be kept continuing. In this way,
there is room for improvement of the walking mechanism of the
walking toy described in WO2017/212899.
SUMMARY
[0005] The gist of the present disclosure is as follows:
[0006] (1) A walking toy having: an upper body part including a
torso; and two legs connected to the torso, in which if the torso
is made to move forward in the state where a contact surface of at
least one leg contacts a walking surface, walking motion is
performed by the legs, the walking toy comprising:
[0007] a crank member rotatably supported in the torso and having a
pair of crank eccentric shafts positioned eccentrically from a
rotational axis of the crank member, wherein
[0008] the crank eccentric shafts are arranged so as to have
opposite phases from each other with respect to the rotational
axis,
[0009] each of the legs has a motion member giving rotational force
to the crank member when the torso moves forward,
[0010] each of the motion members has an eccentric shaft connecting
part pivotably connected to the corresponding crank eccentric
shaft, a torso cooperation part cooperating with the torso, and an
action part on which force received from the walking surface
act,
[0011] grooves are formed at one of the torso cooperation parts of
the motion members and the torso, and projections sliding in the
grooves and guided by the grooves are formed at the other of the
torso cooperation parts and the torso,
[0012] the grooves are configured so that the projections can
reciprocate in the grooves corresponding to rotational motion of
the crank member, and
[0013] if the torso is made to move forward to make the action part
of the motion member of the one leg contacting the walking surface
move rearward relative to the torso, the motion member of the one
leg moves to thereby impart rotational force to the crank member by
the motion member due to the projection being limited in movement
in the groove and, the other leg is made to move forward in the
state separated from the walking surface due to rotation of the
crank member and then is made to contact the walking surface.
[0014] (2) A walking toy having: an upper body part including a
torso: and two legs connected to the torso, in which if the torso
is made to move forward in the state where a contact surface of at
least one leg contacts a walking surface, walking motion is
performed by the legs, the walking toy comprising:
[0015] a crank member rotatably supported in the torso and having a
pair of crank eccentric shafts positioned eccentrically from a
rotational axis of the crank member, wherein
[0016] the crank eccentric shafts are arranged so as to have
opposite phases from each other with respect to the rotational
axis,
[0017] each of the legs has a motion member giving rotational force
to the crank member when the torso moves forward,
[0018] each of the motion members has an eccentric shaft connecting
parts pivotably connected to the corresponding crank eccentric
shafts, a torso cooperation parts cooperating with the torso, and
an action part on which force received from the walking surface
act,
[0019] support point mechanisms making the torso cooperation parts
of the motion members function as points of support in the motion
members are formed at the torso cooperation parts of the motion
members and the torso, and
[0020] if the torso is made to move forward to make the action part
of the motion member of the one leg contacting the walking surface
move rearward relative to the torso, the motion member of the one
leg is pivoted using the upper part of that motion member as a
point of support, and a rotational force is applied to the crank
member by the motion member of the pivoting one leg and, the other
leg is made to move forward in the state separated from the walking
surface due to rotation of the crank member and then is made to
contact the walking surface.
[0021] (3) The walking toy according to the above (2), wherein the
support point mechanisms include guide mechanisms guiding the torso
cooperation parts of the motion members with respect to the
torso.
[0022] (4) A walking toy having: an upper body part including a
torso: and two legs connected to the torso, in which if the torso
is made to move forward in the state where a contact surface of at
least one leg contacts a walking surface, walking motion is
performed by the legs, the walking toy comprising:
[0023] a crank member rotatably supported in the torso and having a
pair of crank eccentric shafts positioned eccentrically from a
rotational axis of the crank member, wherein
[0024] the crank eccentric shafts are arranged so as to have
opposite phases from each other with respect to the rotational
axis,
[0025] each of the legs has a motion member giving rotational force
to the crank member when the torso moves forward,
[0026] each of the motion members has an eccentric shaft connecting
part pivotably connected to the corresponding crank eccentric
shafts, a torso cooperation parts cooperating with the torso, and
an action part on which force received from the walking surface
act,
[0027] movement limiting mechanisms limiting the range by which the
torso cooperation parts of the motion members can move with respect
to the torso are formed at the torso cooperation parts of the
motion members and the torso, and
[0028] if the torso is made to move forward to make the action part
of the motion member of the one leg contacting the walking surface
move rearward relative to the torso, the motion member of the one
leg moves to apply rotational force to the crank member by the
motion member due to the range of possible movement of the torso
cooperation part being limited by the movement limiting mechanism,
and, the other leg is made to move forward in a state separated
from the walking surface due to rotation of the crank member and
then contacts the walking surface.
[0029] (5) The walking toy according to the above (4), wherein the
movement limiting mechanisms include guide mechanisms guiding the
torso cooperation parts with respect to the torso.
[0030] (6) The walking toy according to the above (3) or (5),
wherein the guide mechanisms guide the torso cooperation parts with
respect to the torso in a direction where the torso forms an angle
with respect to the walking surface when the torso is in a state
standing upright with respect to the walking surface.
[0031] (7) The walking toy according to any one of the above (3),
(5), and (6), wherein
[0032] the guide mechanisms have grooves provided at one of the
torso cooperation parts and the torso, and projections provided at
the other of the torso cooperation parts and the torso, and
[0033] the projections slide in the grooves whereby the torso
cooperation parts are guided with respect to the torso.
[0034] (8) The walking toy according to any one of the above (1) to
(7), wherein the action parts of the motion members contact the
walking surface when the legs having the motion members contact the
walking surface.
[0035] (9) The walking toy according to any one of the above (1) to
(7), wherein each of the legs further has an upper leg member and a
lower leg member,
[0036] the upper part of the upper leg member is pivotably
connected to the torso and the lower leg member is pivotably
connected to a lower part of the upper leg member, and
[0037] the action part of each of the motion members is connected
to the corresponding lower leg member at a position different from
the connecting part to the upper leg members.
[0038] (10) The walking toy according to the above (9), wherein the
action part of each of the motion members is pivotably connected to
the corresponding lower leg member at a positions rearward from the
connecting part to the upper leg members.
[0039] (11) The walking toy according to any one of the above (1)
to (10), wherein the motion members are straight rods, and
[0040] the eccentric shaft connecting part is positioned between
the torso cooperation part and the action part.
[0041] (12) The walking toy according to any one of the above (1)
to (11), wherein the contact surface of each of the legs is formed
in an arc shape sticking out toward the walking surface in the
front-rear direction.
[0042] (13) The walking toy according to any one of the above (1)
to (12), wherein the walking toy further comprises a walking aid
attached to the upper body part, and
[0043] the walking aid has an auxiliary contact part continuously
contacting the walking surface at a position different from the
legs while the walking motion is being performed.
[0044] (14) The walking toy according to the above (13), wherein
the auxiliary contact parts are wheels.
[0045] (15) The walking toy according to the above (14), wherein
the wheels rotate about a single axis substantially perpendicular
to the front-rear direction.
[0046] (16) The walking toy according to the above (14) or (15),
wherein the walking aid has a motor driving the wheels.
[0047] (17) The walking toy according to any one of the above (13)
to (16), wherein the walking aid is attached to the rear side of
the upper body part.
[0048] (18) The walking toy according to any one of the above (13)
to (17), wherein the walking aid is attached to the upper body part
so that a forward and downward force are applied to the upper body
part when a forward and downward force are applied to the walking
aid.
[0049] (19) The walking toy according to the above (18), wherein
the walking aid has a main body part having auxiliary contact
parts, and an arm fixed to the main body part at one of the end
parts and attached to the rear side of the upper body part at the
other end part, and the arm is attached to the upper body part so
as to be slanted upward from a position fixed to the main body part
toward a position attached to the upper body part.
[0050] (20) The walking toy according to any one of the above (13)
to (19), wherein
[0051] the torso, the legs, and the crank member are configured so
that the walking motion is continuously performed when the angle,
in the front-rear direction, of the axis of the torso with respect
to the walking surface is within a certain range, and
[0052] the walking aid holds the torso so that the angle of the
axis of the torso with respect to the walking surface is maintained
within the certain range.
[0053] (21) The walking toy according to any one of the above (13)
to (19), wherein
[0054] the torso, the legs, and the crank member are configured so
that the lower leg member of the other leg which had been moved
forward in a state separated from the walking surface contacts the
ground after reaching the forward most position, if the angle, in
the front-rear direction, of the axis of the torso with respect to
the walking surface is within a certain range, and
[0055] the walking aid holds the torso so that the angle of the
axis of the torso with respect to the walking surface is maintained
within the certain range.
[0056] (22) The walking toy according to any one of the above (13)
to (21), wherein the walking aid has an attachment part and the
upper body part has a receiving part, and
[0057] the walking aid is detachably attached with respect to the
upper body part by the attachment part being detachably attached
with respect to the receiving part.
[0058] (23) The walking toy according to any one of the above (1)
to (22), further comprising a phase detector detecting a rotational
phase of the crank member.
[0059] (24) The walking toy according to the above (23),
wherein
[0060] the phase detector has a detected part provided at the crank
member, and a detector arranged so as to face the detected
part,
[0061] the detected part is formed so that an outer circumferential
surface thereof changes in distance from the rotational axis of the
crank member in the circumferential direction of the crank
member,
[0062] the detector outputs a signal corresponding to the distance
to the outer circumferential surface of the detected part.
[0063] (25) The walking toy according to the above (22), further
comprising a phase detector detecting a rotational phase of the
crank member, wherein
[0064] the phase detector has a detected part provided at the crank
member and a detector arranged at the attachment part so as to face
the detected part,
[0065] the detected part is formed so that an outer circumferential
surface thereof changes in distance from the rotational axis of the
crank member in the circumferential direction of the crank member,
and
[0066] the detector outputs a signal corresponding to the distance
to the outer circumferential surface of the detected part.
[0067] (26) The walking toy according to the above (25), wherein
the detector is an optical sensor detecting a distance to an
object,
[0068] the receiving part is a receiving hole formed in the
torso,
[0069] the attachment part is configured so as to be inserted in
the receiving hole, and
[0070] the detector is arranged at the attachment part so that the
detector faces the detected part in the torso when the attachment
part is inserted into the receiving part.
[0071] (27) The walking toy according to the above (25) or (26),
wherein
[0072] the attachment part is positioned upward from the detected
part when attached to the receiving part, and
[0073] the detector is arranged at the bottom side of the
attachment part so as to face the top surface of the detected part
when the attachment part is attached to the receiving part.
[0074] (28) The walking toy according to any one of the above (24)
to (27), wherein
[0075] the crank member has a spacer arranged in a rotational axis
direction of the detected part and the spacer has an outer
circumferential shape different from the detected part, and
[0076] the torso is formed so that the torso does not interfere
with either outer circumferential surface of the detected part or
the spacer when the crank member is arranged in the torso in a
first direction, and so that the torso interferes with either outer
circumferential surface of the detected part or the spacer when the
crank member is arranged in the torso in a second direction
opposite to the first direction.
[0077] (29) The walking toy according to any one of the above (23)
to (28), further comprising a computer to which a signal output
from the phase detector is input and performing processing
according to the input signal.
BRIEF DESCRIPTION OF DRAWINGS
[0078] Embodiments of the present disclosure are best understood
from the following detailed description when read with the
accompanying figures. It is noted that, in accordance with the
standard practice in the industry, various features are not drawn
to scale. In fact, the dimensions of the various features may be
arbitrarily increased or reduced for clarity of discussion.
[0079] FIG. 1 is a front view of a walking toy.
[0080] FIG. 2 is a side view of the walking toy in the same walking
state as FIG. 1.
[0081] FIG. 3 is a perspective view of the walking toy in which a
torso is omitted, in the same walking state as FIG. 1.
[0082] FIG. 4 is a perspective view showing part of the torso and
legs of the walking toy.
[0083] FIG. 5 is a perspective view showing a right leg and a right
motion member.
[0084] FIG. 6 is a partial cross-sectional view of a left forward
bottom part of the torso.
[0085] FIG. 7 is a schematic perspective view of a crank
member.
[0086] FIG. 8 shows a walking state of the walking toy when a left
leg not contacting the walking surface is positioned at a forward
most place.
[0087] FIG. 9 shows a walking state of the walking toy when the
left leg is lowered and a contact surface of the left leg contacts
the walking surface.
[0088] FIG. 10 shows a walking state of the walking toy when a
right leg not contacting the walking surface has moved forward from
the left leg.
[0089] FIG. 11 shows a walking state of the walking toy when the
right leg not contacting the walking surface is positioned at a
forward most place.
[0090] FIG. 12 is a perspective view of a walking toy according to
a modification of the first embodiment.
[0091] FIG. 13 is a side view similar to FIG. 9 of the walking toy
according to a modification of the first embodiment.
[0092] FIGS. 14A and 14B are views schematically showing an example
of a guide mechanism.
[0093] FIG. 15 is a schematic top view of the walking toy in which
the torso is omitted.
[0094] FIG. 16 is a cross-sectional side view of a walking toy
according to a second embodiment.
[0095] FIG. 17 is a perspective view of the walking toy in which
part of the torso is omitted.
[0096] FIGS. 18A to 18C are side views of the walking toy in which
the torso is omitted.
[0097] FIG. 19 is a side view schematically showing a walking toy
according to a third embodiment.
[0098] FIG. 20 is a schematic cross-sectional view of the vicinity
of the torso, showing the state where an upper end part of the arm
is attached to the torso.
[0099] FIG. 21 is a side view showing a walking state of the
walking toy, in the state where the torso is slanted in a forward
orientation.
[0100] FIG. 22 is a schematic plan view of a main body part of a
walking aid according to a modification of the third
embodiment.
[0101] FIG. 23 is a schematic side view of the vicinity of the
torso similar to FIG. 20.
[0102] FIG. 24 is a perspective view of a crank member according to
a fourth embodiment.
[0103] FIGS. 25A and 25B are cross-sectional views of the crank
member.
DESCRIPTION OF EMBODIMENTS
[0104] Below, embodiments will be explained in detail while
referring to the drawings. In the following explanation, similar
component elements are assigned the same reference notations.
First Embodiment
[0105] Configuration of Walking Toy
[0106] First, referring to FIGS. 1 to 4, a walking toy 1 according
to a first embodiment will be explained. FIG. 1 is a front view of
the walking toy 1, FIG. 2 is a side view of the walking toy 1 in
the same walking state as FIG. 1, and FIG. 3 is a perspective view
of the walking toy 1, in which the torso is omitted, in the same
walking state as FIG. 1. Further, FIG. 4 is a perspective view
showing part of the torso and legs of the walking toy 1. FIG. 5 is
a perspective view showing a right leg and right motion member, in
which a lower leg part is shown by broken lines.
[0107] In this Description, the advancing direction of the walking
toy 1 parallel to the walking surface on which the walking toy 1
walks will be referred to as "forward", while the direction in the
opposite direction to forward will be referred to as "rearward".
Further, the direction vertical to the walking surface on which the
walking toy 1 walks and away from the walking surface will be
referred to as "upward", while the direction approaching the
walking surface will be referred to as "downward". In addition, the
right direction and left direction when viewing the walking toy 1
from rearward to forward will be referred to as "rightward" and
"leftward", respectively.
[0108] As shown in FIGS. 1 to 5, the walking toy 1 is provided with
a torso 10, a pair of legs 20 connected to the torso 10, and a
crank member 60. In particular, in the present embodiment, the
walking toy 1 has two legs 20: a right leg 20a provided at the
right side when viewing forward and a left leg 20b provided at the
left side when viewing forward.
[0109] Torso
[0110] The torso 10 is formed as a hollow member. As shown in FIGS.
2 and 4, in the present embodiment, the torso 10 has a front side
half 11 and a rear side half 12. These halves 11, 12 are assembled
with each other whereby the torso 10 is formed. Further, the torso
10 has two side walls 13 forming the left and right side surfaces
of the torso 10 (each of the side walls 13 is configured from a
part of the front side half 11 and a part of the rear side half
12). The side walls 13 have recessed parts 14, at the forward
bottom parts, recessed by the same extents as the thicknesses of
the upper leg members 30 explained later.
[0111] FIG. 6 is a partial cross-sectional view of a left forward
bottom part of the torso 10. As shown in FIG. 6, in the recessed
part 14, a first boss 15 is formed for connecting the leg 20. At
this first boss 15, a bolt hole 151 receiving a first bolt 33 is
formed.
[0112] Further, the torso 10 is provided, inside of the side walls
13, with a pair of inside walls 16 extending in parallel to the
side walls 13, that is, in the front-rear direction (see FIG. 4).
The inside walls 16 are provided, one each, at the left side and
right side from the center of the torso 10 in the left-right
direction. The front side parts of the inside walls 16 are provided
at the front side half 11, and the rear side parts of the inside
walls 16 are provided at the rear side half 12. Further, between
the front side parts and the rear side parts of the inside walls
16, grooves 17 are formed. In particular, in the present
embodiment, the grooves 17 are formed so as to be positioned near
the center of the torso 10 when viewed from the lateral direction.
Further, the grooves 17 are formed so as to be slightly slanted
rearward in the downward direction with respect to the center axis
M of the top-down direction of the torso 10. Therefore, the grooves
17 are formed so that when the torso 10 is in a state standing
upright with respect to the walking surface (that is, when the
center axis of the torso 10 extends in the vertical direction), the
grooves 17 form an angle with respect to the walking surface
(preferably, is vertical to the walking surface or forms a slight
angle with respect to the vertical). Further, in the present
embodiment, the grooves 17 extends straight.
[0113] In addition, the torso 10 has a pair of rod openings 18 at
its bottom wall. The rod openings 18 are formed adjoining the
corresponding inside walls 16 at the inside from the inside walls
16 in the left-right direction. The openings 18 are formed so as to
extend over broad ranges in the front-rear direction. Therefore,
parts of the rod openings 18 are formed at the front side half 11
and the remaining parts of the rod openings 18 are formed at the
rear side half 12 (see FIG. 2).
[0114] Further, in the present embodiment, at the top wall of the
torso 10, a head attachment hole 191 is formed for attachment of a
head member (not shown) of the walking toy 1 (see FIG. 4). Further,
at the left and right side walls 13 of the torso 10, arm attachment
holes 192 are formed for attachment of arm members (not shown) of
the walking toy 1 (see FIG. 2). These attachment holes 191, 192 are
arranged between the front side half 11 and the rear side half 12.
The head member and the arm members are connected to the torso 10
by assembling these halves 11, 12 together. The upper body part is
configured by attaching the head member and the arm members to the
torso 10. Therefore, the upper body part includes the torso 10, the
head member, and the arm members. Note that, in the present
embodiment, the head member and the arm members are formed as
separate members from the torso 10, but the head member and/or the
arm members may also be integrally formed with the torso 10.
Further, the upper body part may be formed from only the torso not
including the head member and/or the arm members, and may also
include a tail member or other members other than the torso 10, the
head member, and the arm members.
[0115] Crank Member
[0116] FIG. 7 is a schematic perspective view of a crank member 60.
The crank member 60 is supported in the torso 10 rotatably about a
rotational axis C. The rotational axis C of the crank member 60
extends perpendicularly to the vertical plane including the
advancing direction of the walking toy 1. Further, in the present
embodiment, the rotational axis C extends in parallel with a pivot
axis A of the upper leg member 30. In the present embodiment, the
crank member 60 is arranged at the center of the torso 10 in the
left-right direction, and at the center of the torso 10 in the
front-rear direction. Note that, the crank member 60 may be
arranged at a position offset from the center of the torso 10 in
the front-rear direction. Further, in the present embodiment, the
crank member 60 is arranged in the cylindrically shaped space
formed between the front side half 11 and the rear side half 12 of
the torso 10.
[0117] The crank member 60 has a cylindrically shaped main body 61
and a pair of crank eccentric shafts 62. The cylindrically shaped
main body 61 is arranged in the torso 10 so that its outer
circumferential surface faces the inner circumferential surface
defining the cylindrically shaped space of the torso 10. Further,
the cylindrically shaped main body 61 is arranged between the pair
of rod openings 18 formed in the torso 10 so that the side surfaces
of the main body 61 face the corresponding rod openings 18.
[0118] The pair of crank eccentric shafts 62 are respectively
positioned eccentrically from the rotational axis C of the crank
member 60, and project in the left-right direction from the
circular side surfaces of the cylindrically shaped main body 61.
Therefore, the right crank eccentric shaft 62a projects out from
the right side surface of the cylindrically shaped main body 61 in
the right direction, while the left crank eccentric shaft 62b
projects out from the left side surface of the cylindrically shaped
main body 61 in the left direction. Further, the crank eccentric
shafts 62 traverse the rod openings 18 at least partially in the
left-right direction, and project from the cylindrically shaped
main body 61 so as to connect with the later explained motion
members 50 in the rod openings 18. The crank eccentric shafts 62
are formed so that their axes E are parallel to the rotational axis
C of the crank member 60. Further, the pair of crank eccentric
shafts 62 are arranged so that they are opposite phases from each
other with respect to the rotational axis C of the crank member
60.
[0119] Legs
[0120] Each of the legs 20 has an upper leg member 30, a lower leg
member 40, and a motion member 50. Therefore, the right leg 20a has
a right upper leg member 30a, right lower leg member 40a, and right
motion member 50a, while the left leg 20b has a left upper leg
members 30b, left lower leg member 40b, and left motion member
50b.
[0121] The upper leg members 30 are members corresponding to the
thighs, and are formed in elongated plate shapes. The top parts of
the upper leg members 30 (in particular, the top end parts) are
connected to the torso 10 pivotably in the front-rear direction. In
the present embodiment, the right upper leg member 30a is connected
to the bottom part of the side wall 13 at the right side of the
torso 10, while the left upper leg member 30b is connected to the
bottom part of the side wall 13 at the left side of the torso
10.
[0122] In particular, in the present embodiment, as shown in FIGS.
5 to 6, at the top part of each upper leg member 30 (in particular,
the top end part), a cylindrically shaped opening 31 is formed. As
shown in FIG. 6, by screwing a first bolt 33 into a bolt hole 151
of the torso 10 in the state where a first boss 15 formed at the
torso 10 is fit into the opening 31, the upper leg member 30 is
connected to the torso 10. As a result, the top part of the upper
leg member 30 is connected to the torso 10 so that the upper leg
member 30 can pivot in the front-rear direction with respect to the
torso 10 about the axis of the first boss 15 or first bolt 33.
However, the upper leg member 30 may also be connected the lower
parts of the side walls of the torso 10 in any way so long as being
able to pivot in the front-rear direction with respect to the torso
10 centered on the top part of the upper leg member 30.
[0123] The lower leg members 40 are parts corresponding to the
lower legs and feet, and have lower leg parts 41 corresponding to
the lower legs and foot parts 42 corresponding to the feet.
Therefore, the foot parts 42 are formed so as to stick out forward
from the lower leg parts 41.
[0124] The top parts of the lower leg members 40 are connected to
the bottom parts of the upper leg members 30 pivotably in the
front-rear direction. In particular, in the present embodiment, the
top end parts of the lower leg members 40 are pivotably connected
to the bottom end parts of the upper leg members 30 so that the
connecting parts of the upper leg members 30 and lower leg members
40 appear like knee joints. Therefore, the top end part of the
right lower leg member 40a is connected to the bottom end part of
the right upper leg member 30a, while the top end part of the left
lower leg member 40b is connected to the bottom end part of the
left upper leg member 30b.
[0125] In particular, in the present embodiment, at the bottom
parts of the upper leg members 30, cylindrically shaped openings 32
are formed (see FIG. 5). Further, at the top parts of the lower leg
members 40, second bosses extending toward the outside in the
left-right direction are formed. Further, in the same way as the
method of connection shown in FIG. 6, in the state with the second
bosses formed at the lower leg members 40 fit in the openings 32 of
the upper leg members 30, second bolts 34 are screwed into the bolt
holes formed at the centers of the second bosses, whereby the upper
leg members 30 are connected to the top parts of the lower leg
members 40. As a result, the top parts of the lower leg members 40
are connected to the bottom parts of the upper leg members 30 so
that the lower leg members 40 can pivot with respect to the upper
leg members 30 in the front-rear direction about the axes of the
second bolts (second bosses). In particular, in the present
embodiment, the pivot axes B of the lower leg members 40 are
parallel to the pivot axes A of the upper leg members 30. Note
that, the lower leg members 40 may be connected to the bottom parts
of the upper leg members 30 in any way as long as being able to
pivot with respect to the upper leg members 30 in the front-rear
direction centered on the top part.
[0126] The foot parts 42 have contact surfaces 43 contacting the
walking surface when the walking toy 1 is walking. In the present
embodiment, the contact surfaces 43 are formed in arc shapes
projecting toward the walking surface in the front-rear direction.
In particular, in the present embodiment, the contact surfaces 43
are formed in substantially arc shapes centered on the vicinities
of the top ends of the lower leg members 40, in particular the
vicinities of the connecting parts of the lower leg members 40 with
the upper leg members 30. At this time, the contact surfaces 43 may
also be formed as arc shapes with single centers, or may be formed
as at least two arc shapes with different centers between forward
parts and rearward parts of the contact surfaces 43. By the contact
surfaces 43 being formed in arc shapes in this way, when the
walking toy 1 is walking on the walking surface, the lower leg
members 40 will are more resistant to tripping at the walking
surface.
[0127] The motion members 50 give rotational force to the crank
member 60, when the torso 10 is made to move forward in the state
where one leg 20 contacts the walking surface. In the present
embodiment, the motion members 50 are formed as straight rods. In
particular, in the present embodiment, the motion members 50 have
the right motion member 50a arranged at the right side from the
crank member 60, and the left motion member 50b arranged at the
left side from the crank member 60. The motion members 50
respectively have action parts 51, torso cooperation parts 52, and
eccentric shaft connecting parts 53. In the present embodiment, the
action parts 51 are positioned at the bottom end parts of the
motion members 50, while the torso cooperation parts 52 are
positioned at the top end parts. The eccentric shaft connecting
parts are positioned between the action parts 51 and the torso
cooperation parts 52. As shown in FIGS. 1 to 4, the motion members
50 are partially arranged in the rod openings 18 formed at the
torso 10.
[0128] The action parts 51 of the motion members 50 are pivotably
connected to the corresponding lower leg members 40. Therefore, the
action part 51 of the right motion member 50a is pivotably
connected to the right lower leg member 40a, while the action part
51 of the left motion member 50b is pivotably connected to the left
lower leg member 40b. Further, the action parts 51 of the motion
members 50 are connected to the corresponding lower leg members 40
at positions different from the connecting parts to the upper leg
members 30. In the present embodiment, the action parts 51 of the
motion members 50 are connected to the corresponding lower leg
members 40 rearward from of the connecting points to the upper leg
members 30.
[0129] In particular, in the present embodiment, at the action
parts 51 of the motion members 50, cylindrically shaped openings 54
are formed (see FIG. 5). Further, at the top parts of the lower leg
members 40 rearward from the second bosses (connecting parts with
upper leg members 30), third bosses extending toward the inside in
the left-right direction are formed. Further, in the same way as
the method of connection shown in FIG. 6, in the state with the
third bosses formed at the lower leg members 40 fit in the openings
54 of the motion members 50, third bolts 57 are screwed into the
bolt holes formed at the centers of the third bosses, whereby the
motion members 50 are connected to the rear parts of the top ends
of the lower leg members 40. As a result, the action parts 51 of
the motion members 50 are connected to the top rear parts of the
lower leg members 40 so that the motion members 50 can pivot about
the axes of the third bolts (third bosses) with respect to the
lower leg members 40. In particular, in the present embodiment, the
pivot axes D about which the motion members 50 pivot with respect
to the lower leg members 40 are parallel to the pivot axes A of the
upper leg members 30. Note that, the motion members 50 may be
connected to the lower leg members 40 in any way as long as being
able to pivot with respect to the lower leg members 40 centered on
the action parts 51.
[0130] The eccentric shaft connecting parts 53 of the motion
members 50 are pivotably connected to the corresponding crank
eccentric shafts 62. Therefore, the eccentric shaft connecting part
53 of the right motion member 50a is pivotably connected to the
right crank eccentric shaft 62a, while the eccentric shaft
connecting part 53 of the left motion member 50b is pivotably
connected to the left crank eccentric shaft 62b.
[0131] In particular, in the present embodiment, at the eccentric
shaft connecting parts 53 of the motion members 50, cylindrically
shaped openings 55 are formed. The corresponding crank eccentric
shafts 62 are fit into the openings 55. Therefore, the right crank
eccentric shaft 62a is fit into the opening 55 of the right motion
member 50a, while the left crank eccentric shaft 62b is fit into
the opening 55 of the left motion member 50b. As a result, the
eccentric shaft connecting parts 53 of the motion members 50 are
connected to the crank eccentric shafts 62 so that the motion
members 50 can pivot about the axes E of the crank eccentric shafts
62.
[0132] At the torso cooperation parts 52 of the motion members 50,
cylindrically shaped projections 56 are formed. The projections 56
are formed so as to extend from the torso cooperation parts 52 of
the motion members 50 toward the outside in the left-right
direction. Therefore, the right projection 56a extends in the right
direction from the torso cooperation part 52 of the right motion
member 50a, while the left projection 56b extends in the left
direction from the torso cooperation part 52 of the left motion
member 50b.
[0133] The projections 56 of the motion members 50 are housed in
the grooves 17 so as to be able to slide in the grooves 17 formed
in the inside walls 16 of the torso 10. Therefore, the projections
56 of the motion members 50 are guided along the grooves 17.
[0134] Walking Motion of Walking Toy
[0135] The walking toy 1 configured as explained above walks by the
legs 20, by the user using his hands, etc., to push the torso 10
forward to make the torso 10 move forward, in the state where the
contact surface of at least one of the legs 20 contacts the walking
surface. Below, referring to FIGS. 8 to 11, the walking motion of
the walking toy 1 configured as explained above will be explained.
FIGS. 8 to 11 are side views showing different walking states of
the walking toy 1. FIGS. 8 to 11 show in order the actuating states
of the walking toy 1 from the state where the left leg 20b is
positioned forward most to the state where the right leg 20a is
positioned forward most.
[0136] Note that, a point A in the figures shows the position of a
pivot axis A of the left upper leg member 30b with respect to the
torso 10, a point B shows the position of a pivot axis B of the
left lower leg member 40b with respect to the left upper leg member
30b, a point D shows the position of a pivot axis D of the left
motion member 50b with respect to the left lower leg member 40b, a
point E shows an axis E of the left crank eccentric shaft 62b, and
a point F shows an axis of the left projection 56b of the left
motion member 50b. Further, a line X in the figures is a line
connecting the point A and the point B and shows the position of
the left upper leg member 30b. A line Y in the figures is a line
connecting the point B and the point D and shows the position of
the left lower leg member 40b. A line Z in the figures is a line
connecting the point D, the point E, and the point F and shows the
position of the left motion member 50b. Note that, the point D, the
point E, and the point F are on the same straight line, therefore
the line Z is a straight line in the present embodiment, but the
point D, the point E, and the point F are not necessarily limited
to being positioned on the same straight line. Accordingly, the
line Z is not necessarily limited to being a straight line.
[0137] Further, a broken line "b" in the figures shows a path of
the point B per cycle, a one-dot chain line "d" shows a path of the
point D per cycle, a broken line "e" shows a path of the point E
per cycle, and a one-dot chain line "f" shows a path of the point F
per cycle. In particular, the point E rotates counterclockwise
(direction of arrow mark in FIG. 8) along the broken line "e".
[0138] FIG. 8 shows the walking state of the walking toy 1 when the
left leg 20b not contacting the walking surface is positioned
forward most, that is, when the point B is positioned forward most.
As shown in FIG. 8, at this time, the left upper leg member 30b
(line X) is positioned forward most in its range of movement, the
left crank eccentric shaft 62b is positioned substantially forward
most in its range of movement (point E is positioned substantially
forward most in path "e"), and the projection 56 of the left motion
member 50b (point F) is positioned downward in the groove 17.
[0139] In the state shown in FIG. 8, the right leg 20a contacts the
ground, therefore if forward force is applied to the torso 10 from
the outside, the right leg 20a receives rearward force relative to
the torso 10. By such force being applied to the right leg 20a, as
explained later, the crank member 60 receives a counterclockwise
force. Along with this, a tangential direction force acts on the
left crank eccentric shaft 62b (point E). The projection 56 of the
left motion member 50b (point F) is limited in movement in a
direction perpendicular to the direction in which the groove 17
extends, in the groove 17 of the torso 10, therefore cannot move
much at all in the tangential direction of the left crank eccentric
shaft 62b (point E), and accordingly functions as a point of
support. As a result, at the left motion member 50b (line Z), the
point E acts as the point of force, the point F acts as the point
of support, and the point D acts as the point of action, and a
force is applied to the point D in the direction of the arrow mark
.alpha..sub.1. Further, due to the gravitational force acting on
the left lower leg member 40b as well, force is applied to the left
leg 20b in a direction lowering it. As a result, the raised left
leg 20b is lowered.
[0140] FIG. 9 shows the walking state of the walking toy 1 when the
left leg 20b is lowered and the contact surface 43 (specifically,
the heel part) of the left leg 20b contacts the walking surface. In
the present embodiment, at this time, as shown in FIG. 9, the left
crank eccentric shaft 62b (point E) is positioned in the vicinity
of the bottommost point in its range of movement (point E is
positioned at the substantially bottommost point of the path "e"),
and the projection 56 of the left motion member 50b is positioned
downward in the groove 17.
[0141] In the state shown in FIG. 9, the left leg 20b contacts the
ground, therefore due to the weight of the walking toy 1 and/or the
downward force on the torso 10 from the outside, the left lower leg
member 40b of the left leg 20b receives upward force from the
walking surface. Further, if forward force is applied to the torso
10 from the outside, the left lower leg member 40b of the left leg
20b receives rearward force relative to the torso 10 from the
walking surface. As a result, an upward force and rearward force
are applied to the point D of the left motion member 50b (line
Z).
[0142] The projection 56 of the left motion member 50b (point F) is
limited in movement in a direction perpendicular to the direction
in which the groove 17 extends, in the groove 17 of the torso 10,
therefore cannot move in the direction of the arrow mark
.alpha..sub.2 and accordingly functions as a point of support. As a
result, at the left motion member 50b (line Z), the point D acts as
the point of force, the point F acts as the point of support, and
the point E acts as the point of action. For this reason, at the
left crank eccentric shaft 62b (point E), in addition to force in
the axial direction of the left motion member 50b (line Z direction
force), a rearward oriented tangential direction force such as
shown by the arrow marks .alpha..sub.2 in the figures is applied.
Accordingly, a rotational force is applied to the point E, and the
crank member 60 rotates counterclockwise. By such rotation of the
crank member 60, the right leg 20a moves forward upward. In this
way, by the right leg 20a which previously had been contacting the
walking surface moving upward, the right leg 20a separates from the
walking surface, and accordingly the leg contacting the ground is
switched from the right leg 20a to the left leg 20b. In particular,
in the present embodiment, the crank member 60 rotates
counterclockwise in FIG. 9, therefore the path "d" of the pivot
axis D of the motion member 50 of the leg 20 not contacting the
ground is higher than the path "d" of the pivot axis D of the leg
contacting the ground. In other words, the paths "d" of the pivot
axes D of the motion members 50 of the legs 20 are generally higher
when the legs 20 are not contacting the ground, than when the legs
20 are contacting the ground. The pivot axes D of the motion
members 50 are positioned rearward of the pivot axes B
corresponding to the knee joints, and the lower leg members 40 can
pivot about the pivot axes B. Therefore due to the above-mentioned
height difference in the path "d", when the leg 20 which had been
contacting the walking surface separates from the walking surface
and moves forward, the relative angle of the lower leg member 40
with respect to the upper leg member 30 changes so that the knee
joint of this leg 20 bends.
[0143] FIG. 10 shows the walking state of the walking toy when the
right leg 20a not contacting the walking surface has moved forward
from the left leg 20b. In the present embodiment, at this time, as
shown in FIG. 10, the left crank eccentric shaft 62b (point E) is
positioned slightly rearward from the vicinity of the bottommost
position in its range of movement (point E is positioned slightly
to the rear upward from the bottommost position of the path "e"),
and the projection 56 of the left motion member 50b (point F) is
positioned upward from the time of the walking state shown in FIG.
9 in the groove 17. Further, the left motion member 50b extends
substantially in the up-down direction (vertical direction).
[0144] In the state shown in FIG. 10 as well, the left leg 20b
contacts the ground, therefore the left lower leg member 40b of the
left leg 20b receives upward force from the walking surface.
Further, forward force from the outside is applied to the torso 10,
therefore the left lower leg member 40b of the left leg 20b
receives rearward force relative to the torso 10 from the walking
surface. As a result, in the state shown in FIG. 10 as well, an
upward force and rearward force are applied to the point D of the
left motion member 50b (line Z). In other words, axial direction
force of the left motion member 50b (line Z direction force) and
rearward oriented tangential direction force shown by the arrow
mark .alpha..sub.3 in the figure are applied to the point D.
[0145] The projection 56 of the left motion member 50b is limited
in motion in the direction perpendicular to the direction in which
the groove 17 extends, in the groove 17 of the torso 10, therefore
the projection 56 cannot move in the direction of the arrow mark
.alpha..sub.3, and accordingly functions as a point of support. As
a result, in the left motion member 50b (line Z), the point D acts
as the point of force, the point F acts as the point of support,
and the point E acts as the point of action. Accordingly, a
rearward force is applied to the left crank eccentric shaft 62b
(point E). Further, as explained above, an axial direction upward
force is applied to the left motion member 50b, therefore an upward
force is also applied to the left crank eccentric shaft 62b (point
E). As a result, a rearward upward force, that is, a rotational
force, is applied to the left crank eccentric shaft 62b and the
crank member 60 rotates counterclockwise. By such rotation of the
crank member 60, the right leg 20a further moves forward and
upward.
[0146] FIG. 11 shows the walking state of the walking toy 1 when
the right leg 20a not contacting the walking surface is positioned
at the forward most position. Therefore, FIG. 11 shows the state
reversed left to right from the walking state shown in FIG. 8. In
the present embodiment, at this time, as shown in FIG. 11, the left
crank eccentric shaft 62b is positioned at substantially the
rearward most place in its range of movement (point E is positioned
at substantially rearward most place of path "e"), and the
projection 56 of the left motion member 50b is positioned in the
vicinity of the center in the groove 17.
[0147] In the state shown in FIG. 11 as well, the left lower leg
member 40b of the left leg 20b receives an upward force from the
walking surface. Further, the left lower leg member 40b of the left
leg 20b receives a rearward force relative to the torso 10. As a
result, in the state shown in FIG. 11 as well, an upward force and
rearward force are applied to the point E of the left motion member
50b (line Z). Therefore, force in the axial direction of the left
motion member 50b (force in line Z direction) and rearward force in
the tangential direction such as shown by the arrow mark
.alpha..sub.4 in the figure are applied to the point E.
[0148] The projection 56 (point F) of the left motion member 50b is
limited in movement in a direction perpendicular to the direction
in which the groove 17 extends, in the groove 17 of the torso 10,
therefore the projection 56 cannot move in the direction of the
arrow mark .alpha..sub.4. Further, the left crank eccentric shaft
62b is positioned at substantially the rearward most position in
its range of movement, therefore the left crank eccentric shaft 62b
(point E) does not move rearward. Therefore, even if a rearward
force .alpha..sub.4 in the tangential direction is applied to the
point D, the point D will not move rearward. Accordingly, the
projection 56 functions as a point of support limiting movement of
the left motion member 50b so that the point D will not move
rearward further. On the other hand, an upward force in the axial
direction is applied to the left motion member 50b, therefore an
upward force, that is, a rotational force, is applied to the left
crank eccentric shaft 62b (point E). As a result, the crank member
60 is made to rotate counterclockwise, and along with this, the
right leg 20a moves downward. Further, force is applied to the
right leg 20a in a downward direction due to gravity acting on the
right lower leg member 40a as well.
[0149] Then, the contact surface of the right leg 20a contacts the
walking surface. After that, an operation similar to the operation
of the left leg 20b shown in FIGS. 8 to 11 is performed at the
right leg 20a. As a result, while the right leg 20a is moving
rearward with respect to the torso 10, the left leg 20b not
contacting the walking surface moves forward. Further, such an
operation is alternately repeated at the left and right legs,
whereby the walking toy 1 walks on the walking surface.
[0150] If referring to FIGS. 8 to 11, the walking toy 1 according
to the present embodiment performs walking motion, if the torso 10
is made to move forward with respect to the walking surface to make
the lower leg member 40 of the one of the legs 20 contacting the
walking surface move rearward relative to the torso 10.
[0151] Here, in the walking toy 1 according to the present
embodiment, the projections 56 formed at the motion member 50 are
guided in the grooves 17 formed in the torso 10. Therefore, the
projections 56 formed at the motion members 50 and the grooves 17
of the torso 10 constitute guide mechanisms guiding the torso
cooperation parts 52 of the motion members 50 with respect to the
torso 10. Therefore, the projections 56 formed at the motion
members 50 and the grooves 17 of the torso 10 form movement
limiting mechanisms limiting the range by which the torso
cooperation parts 52 of the motion members 50 can move with respect
to the torso 10.
[0152] In the present embodiment, since the range, in which the
torso cooperation parts 52 of the motion members 50 can move with
respect to the torso 10, is limited, if the torso 10 moves forward
with respect to the walking surface and the lower leg member 40 of
the one of the legs 20 contacting the walking surface moves
rearward relative to the torso 10, the motion member 50 connected
to this lower leg member 40 moves to apply rotational force to the
crank member 60 by this motion member 50. In other words, the
movement limiting mechanism is configured so that, when the lower
leg member 40 of the one of the legs 20 contacting the walking
surface moves rearward relative to the torso 10, the motion member
50 connected to this lower leg member 40 applies a rotational force
to the crank member 60 by this motion member 50. When such a
rotational force is applied and the crank member 60 rotates, due to
this rotation, the lower leg member 40 of the other leg 20 is moved
forward in the state separated from the walking surface.
[0153] If changing the viewpoint, in the walking toy 1 according to
the present embodiment, due to the projections 56 formed at the
motion members 50 and the grooves 17 of the torso 10, if the torso
10 moves forward with respect to the walking surface to make the
lower leg member 40 of the one leg 20 contacting the walking
surface move rearward relative to the torso 10, the one motion
member 50 connected to the lower leg member 40 of the one leg 20
will pivot rearward about the torso cooperation part 52 as a point
of support. Therefore, the projections 56 of the motion members 50
and the grooves 17 of the torso 10 form support point mechanisms
making the torso cooperation parts 52 of the motion members 50
function as point of supports.
[0154] If, due to the support point mechanism, one motion member 50
pivots rearward using that torso cooperation part 52 as a point of
support, rotational force is applied to the crank member 60 by the
one pivoting motion member 50. Further, if such rotational force is
applied and the crank member 60 rotates, due to the rotation, the
lower leg member 40 of the other leg 20 is moved forward in the
state separated from the walking surface.
[0155] As stated above, according to the present embodiment, when
the torso 10 moves forward in the state with the contact surface of
one leg 20 contacting the walking surface, the other leg 20 is
moved forward through rotation of the crank member 60, then this
other leg 20 contacts the walking surface.
Advantageous Effects
[0156] In the walking toy 1 according to the present embodiment, as
explained above, due to the gravitational force of the walking toy
1 itself and in some cases due to the user pushing the walking toy
1 on the walking surface, the legs 20 receive an upward force from
the walking surface. Further, by the user making the walking toy 1
move forward, the legs 20 receive a rearward force from the walking
surface due to the frictional force. Further, due to the actions of
the guide mechanisms, movement limiting mechanisms or support point
mechanisms which are formed from the projections 56 of the motion
members 50 and the grooves 17 of the torso 10, the upward force and
rearward force applied to the legs 20 are converted to rotational
force applied to the crank eccentric shafts 62. As a result, when
force is applied to the crank eccentric shafts 62 in the rotational
direction, the crank member 60 rotates. Further, by such an
operation being repeatedly performed at the two left and right
legs, the crank member 60 can continuously rotate and accordingly
the walking toy 1 can continuously walk.
[0157] Therefore, according to the present embodiment, due to the
guide mechanisms, movement limiting mechanisms, or support point
mechanisms which are formed from the projections 56 of the motion
members 50 and the grooves 17 of the torso 10, using simple
mechanisms, it is possible to make the crank member 60 stably
rotate and accordingly possible to make the walking toy 1 stably
walk by a small number of parts.
[0158] Modification
[0159] Below, a modification of the walking toy 1 according to the
first embodiment will be explained. FIGS. 12 to 13 explain the
walking toy 1 according to one modification. FIG. 12 is a
perspective view of the walking toy 1 according to the present
modification where part of the torso 10 is omitted. FIG. 13 is a
side view similar to FIG. 9 of the walking toy 1 according to the
present modification. The walking toy 1 according to the present
modification is basically configured in the same way as the walking
toy 1 according to the first embodiment, therefore below, the
explanation will be given centered about parts different from the
walking toy 1 according to the first embodiment.
[0160] In the walking toy 1 according to the present modification,
the projections 56 of the motion members 50 are formed so as to
extend from the torso cooperation parts 52 of the motion members 50
toward the inside in the left-right direction. Along with this, the
inside walls, in which the grooves 17 are formed, are arranged at
the insides of the corresponding motion members 50 in the
left-right direction, that is, at the insides of the corresponding
rod openings 18. As a result, the torso 10 can be formed smaller in
width.
[0161] Further, in the present modification, the grooves 17 are
arranged upward from the crank member 60. In particular, in the
present modification, as will be understood from the path "f" of
the point F corresponding to the projections 56 (see FIG. 13), the
grooves 17 extend substantially in parallel with the axial
direction of the torso 10 (vertical direction) upward at the center
of the crank member 60 when in a state where the torso 10 is
standing upright.
[0162] However, the shapes of the grooves 17 are not limited to the
shapes in the above first embodiment and modification. Therefore,
the grooves 17 can be made various shapes. However, the grooves 17
are preferably formed in line shapes, for example, straight line
shapes, arc shapes, wave shapes, etc., so that the projections 56
of the motion members 50 move back and forth corresponding to
rotation of the crank member 60. Further, the grooves 17 are
preferably formed so that the torso 10 forms an angle with the
walking surface when in a state where it is standing upright with
respect to the walking surface. Note that, depending on the shapes
of the grooves 17, the directions of the motion members 50 in the
different moving states will differ, and accordingly the
relationship between the positions of the projections 56 in the
grooves 17 in the different moving states and the rotational phase
of the crank member 60 will differ.
[0163] Further, in the above first embodiment, the grooves 17 are
formed at the torso 10, and the projections 56 guided by the
grooves 17 are formed at the motion members 50. However, as long as
the torso cooperation parts 52 of the motion members 50 can be
guided with respect to the torso 10, instead of these grooves 17
and projections 56, other guide mechanisms may also be provided.
Therefore, for example, grooves may be formed at the motion members
50 and projections guided by the grooves may be formed at the torso
10.
[0164] FIGS. 14A and 14B are views schematically showing examples
of the guide mechanism. The guide mechanism 70 shown in FIG. 14A is
provided with a slide bar 71 connected to the torso 10 and a slider
72 sliding along this slide bar 71. At the slider 72, a cylindrical
shaped projection 73 is formed. This cylindrically shaped
projection 73 fits in a cylindrically shaped opening formed in the
torso cooperation part 52 of the motion member 50. As a result, the
torso cooperation part 52 of the motion member 50 is guided along
the slide bar 71 provided at the torso 10.
[0165] The guide mechanism 75 shown in FIG. 14B is provided with
two cylinders 76 formed at the torso 10 and having the same axes,
two pistons 77 sliding in these two cylinders 76, and a connecting
member 78 connecting these pistons 77. The connecting member 78
moves along the axes of the cylinders 76. At the connecting member
78, a cylindrically shaped projection 79 is formed. This
cylindrically shaped projection 79 fits in a cylindrically shaped
opening formed in the torso cooperation part 52 of the motion
member 50. As a result, the torso cooperation part 52 of motion
member 50 is guided along the axes of the cylinders 76 provided at
the torso 10.
[0166] Furthermore, as long as the torso cooperation part 52 of the
motion member 50 can function as a point of support, instead of the
groove 17 and the projection 56 or instead of the above guide
mechanism, another support point mechanism may be provided.
Alternatively, as long as the range of possible movement of the
torso cooperation part 52 of the motion member 50 with respect to
the torso 10 can be limited, instead of the groove 17 and the
projection 56 or instead of the guide mechanism, another movement
limiting mechanism may also be provided. Such support point
mechanism or the movement limiting mechanism includes, for example,
a simple structure mechanical link mechanism, etc. Specifically, it
may be considered that one end part of a link member with the other
end part pivotably connected to the torso 10 is pivotably connected
to the torso cooperation part 52 of the motion member 50.
[0167] Further, in the above embodiment, the pivot axis A of the
upper leg member 30 with respect to the torso 10, the pivot axis B
of the lower leg member 40 with respect to the upper leg member 30,
and the pivot axis D of the motion member 50 with respect to the
lower leg member 40 are parallel with the rotational axis C of the
crank member 60. However, these need not necessarily be parallel.
For example, as shown in FIG. 15 of the schematic top view of the
walking toy in which the torso is omitted, the pivot axis A of the
upper leg member 30, the pivot axis B of the lower leg member 40,
and the pivot axis D of the motion member 50 may have angles with
respect to the rotational axis C of the crank member 60. In this
case as well, the rotational axis C of the crank member 60 extends
perpendicular to the vertical surface including the advancing
direction.
Second Embodiment
[0168] Next, referring to FIGS. 16 to 18A to 18C, a walking toy 1
according to a second embodiment will be explained. Below, the
explanation will be given focused on parts different from the
walking toy according to the first embodiment.
[0169] FIG. 16 is a cross-sectional side view of the walking toy 1
according to the second embodiment, FIG. 17 is a perspective view
of the walking toy 1 in which part of the torso 10 is omitted, and
FIGS. 18A to 18C are side view of the walking toy 1 in which the
torso 10 is omitted.
[0170] As shown in FIGS. 16 to 18C, the walking toy 1 of the
present embodiment is provided, similarly to the walking toy in the
first embodiment, with a torso 10, a pair of legs 20, and a crank
member 60.
[0171] In the present embodiment, the torso 10 has a bottom side
half 11' and a top side half 12'. These halves 11', 12' are
assembled with each other whereby the torso is formed. The grooves
17 are formed between these bottom side half 11' and top side half
12'. In particular, in the present embodiment, a pair of grooves 17
of the same shapes are provided at the both sides of the legs
20.
[0172] Further, in the present embodiment, the legs 20 do not have
the upper leg members and lower leg members, and have only motion
members 50. The motion members 50 according to the present
embodiment are provided with connecting parts 58 and extension
parts 59 extending from the connecting parts 58 to the outside. In
particular, in the present embodiment, the motion members 50 are
configured so that the connecting parts 58 and the extension parts
59 has substantially a T-shape. The connecting parts 58 have torso
cooperation parts 52 at one of the end parts thereof and have
eccentric shaft connecting parts 53 at the other of the end parts
thereof. Further, the extension parts 59 have action parts 51 at
their front end parts. Therefore, the motion members 50 are
respectively provided with action parts 51, torso cooperation parts
52, and eccentric shaft connecting parts 53.
[0173] In the present embodiment, at the front ends of the
extension parts 59, foot parts 591 corresponding to feet are
provided. The foot parts 591 have contact surfaces which contact
the walking surface when the walking toy 1 is walking in the same
way as the foot parts of the first embodiment. Therefore, the
action parts 51 positioned at the front end parts of the extension
parts 59 contact the walking surface when the legs 20 having the
action parts 51 contact the walking surface.
[0174] The eccentric shaft connecting parts 53 of the motion
members 50 are pivotably connected to the corresponding crank
eccentric shafts 62. Therefore, the eccentric shaft connecting
parts 53 are connected to the crank eccentric shafts 62 so that the
motion members 50 can pivot about the axes of the crank eccentric
shafts 62.
[0175] At the torso cooperation parts 52 of the motion members 50,
columnar shaped parts are formed. The two ends of the columnar
shaped parts constitute projections 56 projecting to the left-right
direction from the connecting parts 58. Therefore, in the present
embodiment, the torso cooperation parts 52 have two projections 56
projecting out in opposite directions from each other. These
projections 56 are housed in the grooves 17 formed in the torso 10
so that they slide in the grooves 17.
[0176] The thus configured walking toy 1 according to the second
embodiment also walks by the legs 20 by the user pushing, by hand,
etc., the torso 10 forward to make the torso 10 move forward in the
state with the contact surface of at least one of the legs 20
contacting the walking surface. FIGS. 18A to 18C show different
walking states of the walking toy 1. Note that, in FIGS. 18A to 18C
as well, the point D is shown for convenience in the same way as
FIGS. 9 to 11, but in the present embodiment, the point D does not
function as a pivot axis.
[0177] FIG. 18A shows the walking state of the walking toy 1 when
the left motion member 50b of the left leg 20b, which was not
contacting the ground, contacts the ground. At this time, an upward
force and rearward force are applied to the action part 51 of the
left motion member 50b. Further, the projection 56 (point F) of the
left motion member 50b functions as a point of support, therefore a
rotational force is applied to the left crank eccentric shaft 62b
(point E) and thus the crank member 60 rotates
counterclockwise.
[0178] FIG. 18B shows the walking state of the walking toy 1 when
the right motion member 50a of the right leg 20a not contacting the
walking surface moves forward from the left motion member 50b of
the left leg 20b contacting the walking surface. Further, FIG. 18C
shows the walking state of the walking toy 1 when the right motion
member 50a of the right leg 20a, which did not contact the walking
surface, contacts the walking surface. In the walking states shown
in FIGS. 18B to 18C as well, an upward force and rearward force are
applied from the walking surface to the action part 51 of the left
motion member 50b. Further, by the projection 56 of the left motion
member 50b (point F) functioning as a point of support, a
rotational force is applied to the left crank eccentric shaft 62b
(point E) and thus the crank member 60 rotates
counterclockwise.
[0179] Then, an operation similar to the operation shown in FIGS.
18A to 18C is performed in the right leg 20a. Further, such an
operation is alternately repeated at the left and right whereby the
walking toy 1 walks on the walking surface. Therefore, in the
walking toy 1 according to the present embodiment as well, in a
similar way to the walking toy according to the first embodiment,
the walking toy 1 can be made to continuously walk. Therefore,
according to the present embodiment, using the guide mechanisms,
movement limiting mechanisms, or support point mechanisms which is
formed from the projections 56 of the motion members 50 and the
grooves 17 of the torso 10, that is, using simple mechanisms, it is
possible to make the crank member 60 stably rotate and accordingly
possible to make the walking toy 1 stably walk by a fewer number of
parts than the first embodiment.
[0180] Note that, in the above second embodiment, the motion
members 50 are formed so as to have T-shapes, but they may also be
formed so as to have shapes different from T-shapes. Therefore, for
example, the motion members 50 may be formed in straight shapes in
similarly to the first embodiment. Further, conversely, the motion
members according to the first embodiment may be formed in T-shapes
similarly to the motion members according to the second
embodiment.
Third Embodiment
[0181] Next, referring to FIGS. 19 to 20, a walking toy 1 according
to a third embodiment will be explained. Below, the explanation
will be given focused on parts different from the walking toy
according to the first embodiment.
[0182] FIG. 19 is a side view schematically showing the walking toy
1 according to the third embodiment. As shown in FIG. 19, the
walking toy 1 according to the present embodiment is provided with
a walking aid 80 attached to the torso 10, in addition to the
walking toy according to the first embodiment or the second
embodiment provided with the torso 10, legs 20, and crank member 60
(below, also referred to as the "doll part").
[0183] The walking aid 80 aids the walking motion by the doll part
of the walking toy 1. The walking aid 80 is provided with a main
body part 81, an arm 82 fixed to the main body part 81 and to be
attached to the torso 10, and wheels 83 continuously in contact
with the walking surface.
[0184] The main body part 81 is formed as a hollow housing. In the
example shown in FIG. 19, the main body part 81 has a box shape,
but it may have any shape. At the top surface of the main body part
81, a switch 85 for operating a locking part provided at the arm
82, is provided. Note that, as long as being possible to operate
the locking part, the switch 85 may be arranged anywhere at the
walking aid 80.
[0185] The arm 82 is formed in a hollow shape. At the bottom end
part, it is fixed to the front of the main body part 81. Further,
the arm 82 is attached to the rear side of the torso 10 at its top
end part. In the present embodiment, the attachment position of the
arm 82 to the torso 10 is higher than the position fixed to the
main body part 81. Therefore, the arm 82 is attached to the torso
10 so as to be slanted upward toward the front, that is, so as to
be slanted upward from the position fixed to the main body part 81
toward the position attached to the torso 10.
[0186] Further, in the present embodiment, the top end part of the
arm 82 is detachably attached to the rear side of the torso 10
(back side). As a result, the walking aid 80 is detachably attached
to the torso. FIG. 20 is a schematic cross-sectional view of the
vicinity of the torso 10 showing the state where the top end part
of the arm 82 is attached to the torso 10. As shown in FIG. 20, at
the top end part of the arm 82, an attachment part 821 to be
attached to a receiving part 101 of the torso 10 is formed. The
attachment part 821 is, for example, a bar part formed into an
angular columnar shape. On the other hand, the receiving part 101
to which the attachment part 821 is attached is, for example,
formed at the rear surface of the torso 10 as a receiving hole
having a shape complementary to the bar part having an angular
columnar shape. Therefore, in the present embodiment, the
attachment part 821 is attached to the receiving part 101 by the
bar part of the attachment part 821 being inserted into the
receiving hole of the receiving part 101.
[0187] Further, at the top part of the attachment part 821, a
sliding opening 86 is formed. Inside this sliding opening 86, a
locking part 87 sliding along the sliding opening 86 is arranged.
In the present embodiment, the sliding opening 86 is formed at the
top surface of the attachment part 821. The locking part 87 can
slide between a projecting state where it projects upward from the
sliding opening 86 of the attachment part 821 and a stored state
where it is stored in the sliding opening 86. The locking part 87
is biased upward by an elastic member 88. Therefore, the locking
part 87 is maintained in the projecting state when force is not
applied from the outside.
[0188] At the receiving part 101, a locking hole 102 is formed at a
position facing the sliding opening 86 when the attachment part 821
is attached to the receiving part 101. Therefore, when the
attachment part 821 is attached to the receiving part 101 and the
locking part 87 is in the projecting state, the locking part 87 is
locked in the locking hole 102 and accordingly the attachment part
821 is locked in the receiving part 101.
[0189] Further, at the bottom surface of the locking part 87, a
strap 89 is provided. This strap 89 is passed through the inside of
the hollow arm 82 and connected to the switch 85. In the present
embodiment, when the switch 85 is operated by the user, the locking
part 87 slides against the biasing force of the elastic member 88
from the projecting state to the stored state. As a result, when
the switch is operated, the lock of the locking part 87 in the
locking hole 102 is released and, accordingly, the lock of the
attachment part 821 in the receiving part 101 is released.
[0190] The wheels 83 continuously contact the walking surface at
positions different from the legs 20 while walking motion by the
legs 20 is being performed. In the present embodiment, the walking
aid 80 is provided with only one set of wheels rotatably attached
to the main body part 81. In particular, in the present embodiment,
these wheels rotate about one axis G substantially perpendicular to
the front-rear direction.
[0191] The walking aid 80 is formed so that when attached to the
torso 10, the torso 10 is held at a specific angle with respect to
the walking surface. In particular, in the present embodiment, the
walking aid 80 is formed so that the torso 10 is held in a state
standing upright with respect to the walking surface (that is, a
state in which the axis of the torso 10 extends in the vertical
direction).
[0192] The thus configured walking aid 80 constantly contacts the
walking surface by the wheels 83. Here, at the doll part, usually
only one leg contacts the walking surface during walking. In this
case, sometimes stumbling will occur due to staggering tilting to
the front, rear, left, or right direction. Further, for the doll
part to walk, frictional force must be generated between the leg
contacting the walking surface and the walking surface, but if
staggering occurs such as described above, there is a possibility
that the frictional force will be insufficient. As opposed to this,
the wheels 83 are constantly in contact with the ground, therefore
such staggering can be kept from occurring.
[0193] Note that, in the above embodiment, wheels 83 are used as
auxiliary contact parts continuously contacting the walking
surface. However, as long as being able to continuously contact the
walking surface, auxiliary contact parts other than the wheels 83
may also be used. Such auxiliary contact parts, for example, may
also be flat shaped contact members. Alternatively, they may be the
walking toy according to the first embodiment or the second
embodiment provided with the torso, legs, and crank member.
[0194] Further, in the above embodiment, the walking aid 80 is
attached to the rear side of the torso 10. However, the walking aid
80 may also be attached to a portion different from the rear side
of the torso 10. For example, it may be attached to the front side
of the torso 10.
[0195] Furthermore, in the above embodiment, the arm 82 slants
upward from the position fixed to the main body part 81 to the
position attached to the torso 10. Therefore, due to the
gravitational force applied to the arm 82, the arm 82 is acted on
by a moment centered on the wheels 83 of the main body part 81.
Further, if a forward downward force .beta..sub.1 is applied to the
arm 82 from the outside, due to that force as well, the arm 82 is
acted on by a moment centered on the wheels 83 of the main body
part 81. As a result, at the position of attachment of the arm 82
to the torso 10, a forward downward force .gamma. is applied to the
torso 10. In other words, in the present embodiment, it can be said
that the walking aid 80 is attached to the torso 10 so that a
forward and downward force are applied to the torso 10 when a
forward and downward force is applied to the walking aid 80. As a
result, when the torso 10 moves forward due to application of the
forward force .beta. to the arm 82, the frictional force generated
between the contact surface of the leg 20 contacting the walking
surface and the walking surface becomes larger. For this reason,
the leg 20 is kept from sliding on the walking surface in a forward
orientation when forward force is applied to the torso 10.
[0196] Next, the relationship between the slant of the torso 10
with respect to the walking surface and walking will be explained.
FIG. 21 is a side view showing the walking state of the walking toy
1 when the torso 10 is in a state slanted to a forward orientation.
In the state shown in FIG. 21, the left leg 20b and the left lower
leg member 40b are positioned at the forward most position
(position lifted up the most). Further, in this state, the left leg
20b, which had up to then moved forward without contacting the
walking surface, contacts the walking surface. Therefore, if
tilting the torso 10 with respect to the walking surface further to
the forward orientation, the left leg 20b which had been moving
forward without contacting the walking surface contacts the walking
surface before reaching the forward most position. Further, if the
left leg 20b contacts the walking surface, a relatively rearward
force is applied to the left leg 20b when a forward force is
applied to the torso 10. The left leg 20b is before reaching the
forward most position, therefore if rearward force is applied to
the left leg 20b, force is applied to the crank member 60 in the
opposite rotational direction. As a result, the walking toy 1 is no
longer able to walk further. Therefore, in this case, the walking
toy 1 cannot continuously perform walking motion. Conversely
speaking, if the angle of the torso 10 with respect to the walking
surface is an angle in a certain range larger than the angle shown
in FIG. 21 (right angle side), the lower leg members 40 of the legs
20, which moved forward in the state separated from the walking
surface, contact the walking surface after reaching the forward
most positions. Therefore, in this case, the walking toy 1 can
continuously perform walking motion.
[0197] Further, if the torso 10 is slanted in a rearward
orientation with respect to the walking surface, if the slant angle
becomes too large over equal to or greater than a certain specific
angle, the walking toy 1 may reach a state where the contact
surfaces of the lower leg members 40 extend substantially vertical.
If reaching such a state, even if making the torso 10 move forward,
a rearward force can no longer be applied to the lower leg members
40. As a result, the walking toy 1 can no longer continuously
perform walking motion. Therefore, even if the torso 10 slants too
much in the rearward orientation, the walking toy 1 cannot
continuously perform walking motion. Therefore, in the walking toy
1, walking motion is continuously performed if the angle of the
axis of the torso 10 with respect to the walking surface is within
a certain range.
[0198] Here, in the present embodiment, the walking aid 80 holds
the torso 10 of the doll part so that the angle of the axis of the
torso 10 with respect to the walking surface is substantially a
right angle. Therefore, the angle of the axis of the torso 10 with
respect to the walking surface is an angle within the
above-mentioned certain range. For this reason, the walking toy 1
having the walking aid 80 according to the present embodiment can
continuously perform walking motion. Note that, the walking aid 80
may hold the torso 10 so that the axis of the torso 10 has an angle
with respect to the walking surface different from a right angle if
the angle of the axis of the torso 10 with respect to the walking
surface is maintained in the above-mentioned certain range. The
walking aid 80 may also be configured so as to enable change of the
angle of the axis of the torso 10 with respect to the walking
surface in the above-mentioned certain range.
[0199] Note that, in the present embodiment, the arm 82 is attached
to the torso 10, but it may also be attached to a member of the
upper body part different from the torso 10, for example, the head
member or the arm members. Further, in the present embodiment, the
arm 82 and main body part 81 of the walking aid 80 are configured
as members separate from the torso 10. However, the walking aid 80
may also be formed integrally with the torso 10. In this case, the
walking aid 80 cannot be detached from the torso 10.
[0200] Further, in the above second embodiment, as the doll part of
the walking toy 1, the walking toy according to the above first
embodiment is used. However, as the doll part, a doll part of a
configuration different from the walking toy according to the above
first embodiment may be used. However, even in this case, the doll
part is configured so that if the angle of the torso with respect
to the walking surface in the front-rear direction is within a
certain range, the walking motion is continuously performed.
Alternatively, the doll part is configured so that if the angle of
the axis of the torso with respect to the walking surface in the
front-rear direction is within a constant range, the lower leg
member 40 of the leg 20 which had been moved forward in the state
separated from the walking surface reaches the forward most
position, then contacts the surface.
[0201] Further, the walking aid 80 may be provided with motors for
driving the wheels 83. FIG. 22 is a schematic plan view of a main
body part 81 of a walking aid 80 according to a modification of the
third embodiment. As shown in FIG. 22, the walking aid 80 according
to the present modification has four wheels 83. Among these, the
two front side walls are driven wheels 831, while the two rear side
wheels are steering drive wheels 832. The main body part 81 has a
steering motor 811, drive motor 812, and electronic control unit
813 connected to these motors 811, 812. The steering drive wheels
832 are steered by the steering motor 811 and are driven by the
drive motor 812. The steering motor 811 and the drive motor 812 are
controlled by the electronic control unit 813. The electronic
control unit 813 may also be provided with a communication device
enabling communication with an outside controller. In this case,
the steering motor 811 and the drive motor 812 are controlled by
the outside controller. Note that, the walking aid 80 may also not
have driven wheels 831 and have only steering drive wheels 832.
Further, the steering motor 811 may not be provided either.
Accordingly, the steering drive wheels 832 may not be steered.
[0202] In this way, by the walking aid 80 being provided with
motors driving the wheels 83, the walking toy can be made to walk
even without the user pushing the torso 10 by his hands.
Fourth Embodiment
[0203] Next, referring to FIGS. 23 to 25B, a walking toy 1
according to a fourth embodiment will be explained. Below, the
explanation will be given centered on parts different from the
walking toy according to the third embodiment.
[0204] FIG. 23 is a schematic side view of the vicinity of the
torso 10, similar to FIG. 16. As shown in FIG. 23, the walking toy
1 according to the present embodiment is provided with a phase
detector 90 detecting a rotational phase of the crank member 60.
The phase detector 90 is provided with a detected part 64 formed at
the crank member 60 and a detector 91 arranged so as to face the
detected part 64. The output signal of the phase detector 90 is
input to a computer (not shown) arranged in the walking toy 1.
Alternatively, the output signal of the phase detector 90 may be
input through a communicating means to an outside computer. These
computers perform processing according to the signal input from the
phase detector 90. They are used for processing inside. The
detected rotational phase is, for example, used for operating other
equipment linked with motion of the legs 20 of the walking toy
1.
[0205] FIG. 24 is a perspective view of a crank member 60 according
to the present embodiment. Further, FIG. 25A is a cross-sectional
view of the crank member 60 seen along A-A of FIG. 24, while FIG.
25B is a cross-sectional view of the crank member 60 seen along B-B
of FIG. 24. In FIGS. 25A and 25B, part of the torso 10 is shown in
addition to the crank member 60.
[0206] As shown in FIG. 24, the crank member 60 is provided with a
pair of disk shaped members 63 arranged at the outsides in the
direction of the rotational axis C, and the detected part 64 and
spacer 65 provided between the disk shaped members 63. The spacer
65 is arranged adjoining the detected part 64. As shown in FIG.
25A, the detected part 64 is formed by two members with
semicircular shaped cross-sections combined with each other
eccentrically with respect to the rotational axis C of the crank
member 60. Therefore, the detected part 64 is formed so that its
outer circumferential surface changes in distance from the
rotational axis C in the circumferential direction of the crank
member 60. Further, as shown in FIG. 25B, the spacer 65 is formed
in a columnar shape so that its outside diameter is smaller than
the maximum outside diameter of the detected part 64. Therefore,
the spacer 65 has an outer circumferential shape different from the
detected part 64.
[0207] Further, as shown in FIG. 25B, on the wall surface 103 of
the torso 10 facing the spacer 65, a projecting part 104 is
provided. This projecting part 104 has a height so as to not reach
the outer circumferential surface of the spacer 65. Further, the
projecting part 104 has a height so that when the crank member 60
is arranged in the opposite direction vis-a-vis the left and right
in the torso 10 and the projecting part 104 faces the detected part
64 of the crank member 60, the projecting part 104 will contact the
detected part 64 during rotation of the crank member 60. Therefore,
in the present embodiment, the torso 10 is formed so that when the
crank member 60 is arranged in the torso 10 in the first direction
(correct direction), the torso 10 will not interfere with the outer
circumferential surface of either of the detected part 64 and
spacer 65 and so that when the crank member 60 is arranged in the
torso 10 in the second direction opposite to the first direction
(mistaken direction), the torso 10 will interfere with the outer
circumferential surface of the detected part 64. As a result, it is
possible to prevent the crank member 60 from being arranged in the
opposite direction.
[0208] Note that, the spacer 65 may be formed so that its outside
diameter is larger than the maximum outside diameter of the
detected part 64. In this case, when the crank member 60 is
arranged in the torso 10 in the first direction, the torso 10 will
not interfere with the outer circumferential surface of either of
the detected part 64 and spacer 65, and when the crank member 60 is
arranged in the torso in the second direction opposite to the first
direction, the torso 10 will interfere with the outer
circumferential surface of the spacer 65.
[0209] In the present embodiment, the detector 91 is arranged at
the attachment part 821 of the arm 82. Further, the receiving part
101 is positioned upward from the crank member 60. Therefore, the
attachment part 821 is positioned upward from the detected part 64
when attached to the receiving part 101. Further, the detector 91
is arranged at the bottom side of the attachment part 821.
Therefore, the detector 91 is arranged at the attachment part 821
so as to face the top surface of the detected part 64 of the crank
member 60 when the attachment part 821 is attached to the receiving
part 101.
[0210] Further, in the present embodiment, the detector 91 is an
optical sensor detecting a distance to an object facing the
detector 91. The detector 91 is arranged so as to face the detected
part 64, therefore outputs a signal corresponding to the distance
to the outer circumferential surface of the detected part 64.
[0211] Here, as explained above, the attachment part 821 is
provided with a locking part 87 at its top side. In the present
embodiment, by the detector 91 being arranged at the bottom side of
the attachment part 821, the attachment part 821 can be provided
with both the locking part 87 and detector 91. Further, when
attachment part 821 is attached to the receiving part 101, the
detector 91 faces the top surface of the detected part 64 in the
torso 10. Therefore, since the detector 91, which is an optical
sensor, detects distance in a relatively dark in of the torso 10,
it can detect the distance with a high precision. Furthermore, in
the present embodiment, the detector 91 is arranged at the bottom
side of the attachment part 821. Therefore, compared to the case
where the detector 91 is provided at the front end of the
attachment part 821, the attachment part 821 can be inserted up to
the deep end in the torso 10. As a result, the attachment part 821
can be stably attached to the receiving part 101.
[0212] Note that, so long as able to detect the distance to an
object facing the detector 91, the detector 91 may be a magnetic
sensor, contact type sensor, or other sensor. Further, so long as
able to detect a phase of the crank member 60, the phase detector
90 may also be configured as a rotary pulse detection sensor
outputting a pulse signal each time the crank member 60 rotates by
a certain angle, or other phase detector.
[0213] Further, in the present embodiment, the detector 91 is
provided at the attachment part 821 of the walking aid 80. However,
the detector 91 may, for example, also be arranged in the torso 10,
or may also be provided at a part separate from the walking aid
80.
[0214] Specifically, for example, the front side of the torso 10
(ventral side) may be provided with a receiving part different from
the receiving part 101 and an attachment part having a detector may
be attached to that receiving part. In this case, the attachment
member may have a communication device able to send output from the
detector to an outside device. By providing a receiving part,
different from the receiving part 101 for attaching the walking aid
80, at the torso 10 in opposite directions from each other in this
way, it is possible to simultaneously attach the separate walking
aid 80 and attachment member having a detector.
[0215] Further, in the above embodiment, the projecting part 104 is
provided on the wall surface 103 of the torso 10 at a position
facing the spacer 65. However, the projecting part 104 may also be
provided on the wall surface 103 at a position facing the detected
part 64. In this case, the spacer 65 has to have a maximum outside
diameter larger than the maximum outside diameter of the detected
part 64.
[0216] Above, preferred embodiments were explained, but the present
disclosure is not limited to these embodiments. They can be
corrected and changed in various ways within the language of the
claims.
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